ASTROSAT CZTI

Data Quality Report

Orbit 33829

Creation date: 2024-06-27T20:53:09.048784
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_106T03_9000004826_33829cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33829cztM0_level2_quad_clean.evt
Size (bytes)493,683,84062,467,200
Size470.8 MB 59.6 MB
Events in quadrant A2,854,175395,748
Events in quadrant B3,422,153386,902
Events in quadrant C3,281,105392,046
Events in quadrant D5,051,072361,610

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117103
B0134882
C0131742
D0185332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506770.138149%
B50671703.355042%
C5067811.598579%
D50673396.690349%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7189 5068 0 0 0.00% 0.00%
B 7189 5068 119 119 1.66% 2.35%
C 7189 5068 53 53 0.74% 1.05%
D 7189 5068 279 279 3.88% 5.51%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 135111 1014.34 670 660 132.6
A 0 254 99423 745.1 670 660 132.6
A 13 6 21511 157.31 670 660 132.6
B 5 172 576673 4747.87 656 639 121.3
B 8 128 62415 509.18 656 639 121.3
B 0 213 58072 473.38 656 639 121.3
C 15 214 220902 1493.62 649 655 147.5
C 0 10 202313 1367.56 649 655 147.5
C 3 233 135172 912.24 649 655 147.5
D 8 195 1042130 6209.86 636 623 167.7
D 12 6 417711 2486.84 636 623 167.7
D 2 250 308823 1837.61 636 623 167.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter